50742421 has 4 divisors (see below), whose sum is σ = 50814700. Its totient is φ = 50670144.

The previous prime is 50742403. The next prime is 50742437. The reversal of 50742421 is 12424705.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22800625 + 27941796 = 4775^2 + 5286^2 .

It is a cyclic number.

It is not a de Polignac number, because 50742421 - 2¹⁵ = 50709653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50742401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35076 + ... + 36493.

It is an arithmetic number, because the mean of its divisors is an integer number (12703675).

Almost surely, 2^50742421 is an apocalyptic number.

It is an amenable number.

50742421 is a deficient number, since it is larger than the sum of its proper divisors (72279).

50742421 is an equidigital number, since it uses as much as digits as its factorization.

50742421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72278.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 50742421 is about 7123.3714630082. The cubic root of 50742421 is about 370.2176002711.

The spelling of 50742421 in words is "fifty million, seven hundred forty-two thousand, four hundred twenty-one".